54. EURYBIA.* Cass.
Radius fcemineus fertilis. Involucri foliola arcte imbricata disco herbaceo apicis angusta.
Flosculi disci tubo limboque discretis. Achenia elongata prismatica glabra vel pubescentia.
Pappus simplex rigidulus persistens scaber. Receptaculum alveolatum.—Ckaracteres phi-
rimi Asteris generis, sed differt; involucro subcylindrico arcte imbricato, foliolis apice non
fóliaceis vel saltern leeviori costce expansione prceditis, acheniisque linearibus longioribus sub-
prismaticis vel angulatis, nee compressis; habitu denique et pubescentia. Nees.
1. E. macrophylla; foliis cordatis ovatisve, radicalibus subtrinervatis, caul in is in petio-
lum alatum contractis serratis scabris subtus hirtis, caule hirto ramisve glabro patulo corym-
boso, ramulis rigidis, involucri arcte imbricati foliolis oblongo-lanceolatis obtusis. Nees.-r-
Cass. in Diet, des Sc. Nat. v. 37. p. 487. Nees, Ast. p. 140.—Aster macrophyllus. Linn.-r-
Pursh, Fl. Am. v. 2.p. 552.—A. divaricatus. Linn.—A. infirmus. Mich. Am. v. 2. p. 109?
(Nees.)
Hab. Canada. Pursh. From Lake Huron, Dr. Todd, to Norway House on the Saskatchewan.
Drummond.
2. E. corymbosa; foliis ovatis inferioribus cordatis serratis petiolatis, caule dichotomo-
corymboso, involucri foliolis imbricatis obtusis exterioribus ovatis. Nees.—Cass. 1. c.
Nees, Ast. p. 143.—Aster corymbosus. Ait. Hort. Kew. ed. 1. v. 3. p. 207. Pursh, Fl. Am.
v. 2. p. 552. Elliott, Carol, v. 2. p. 365.
Hab. Canada. Pursh.—Nees has three other American species not in any American Flora, with which
both Dr. Boott and myself are unacquainted.
55. SERIOCARPUS. Nees.
Radius fcemineus fertilis. Involucri foliola basi lata subcartilaginea arcte imbricata, apice
abrupte herbacea et plerumque patula. Flosculi disci pauci conico-cylindracei, tubo limboque
confluentibus. Achenia brevia, obverse pyramidalia dense sericea. Pappus simplex
rigidulus persistens. Receptaculum angustum, alveolatum, irregulare.— Differt hocce genus
ab Eurybio appendice foliolorum involucri distincta; ab Astere acheniis brevibus dense sericeis
et forma floscuhrum disci, ab utroque genere cunctisque reliquis Astereis habitu, proesertim ab
inflorescentia pendente. Nees.
1. S. solidagineus; foliis lineari-spathulatis obtusis integerrimis margine scabris, corymbo
paucifloro, involucro squarroso. Nees, Ast. p. 149.— Aster solidaginoidés. Mich. Am. v. 2.
p. 108. Pursh, Fl. Am. v. 2. p. 542. Elliott, Carol, v. 2. p. 340.—Conyza linifolia. Linn.
Hab. Near Montreal. Mr. Cleghom.
2. S. rigidus (Lindl.); foliis obovatis (potius oblongo-spathulatis) subtrinerviis integerrimis
cauleque scaberrimis, corymbo terminali simplici vel composito contract», involucri tur-
binati foliolis adpressis basi nudis, radio pappo breviore. Liridl. MSS.
* I follow the learned Nees von Esenbeckin the adoption of this and other Genera of his Asterinea; but I must confess
that I think the character is much too slight, and the difference in habit by no means sufficient to warrant such a
separation.
Hab. Columbia River. Dr. Scouler. Abundant on undulating, dry, gravelly soils near Fort Vancouver,
and low hills of the interior. Douglas.—The leaves are remarkably acute, almost mucronate, and they
and the stems are quite rough with minute elevated dots. “ 8. conyzoidi proximus.” Lindl. To me this
speoies, though very distinct, appears to approach nearest to 8. tortifolius.
56. TRIPOLIUM. Dod. Nees.
Radius fcemineus fertilis. Involucri foliola interiora ampliora membranacea, colorata, ap-
pressa, exteriora in pedunculi foliola decrescentia. Achenia cuneiformia, compressa, gla-
briuscula. Pappus simplex, capillaris, densus, noduloso-scaber. Receptaculum alveolatum.
—Herbse annuce vel perennes, glabrae, in solo salsuginoso crescentes. Folia angusta, succu-
lenta, margine scepe scabra, triplinervia vel subavenia. Flores corymbosi albi vel casrulei. In-
volucra scepe colorata.—Species Europce, Asice Caucasicce, Americce septentrionali indigence.
Nees.
1. T.pauciflorum; foliis linearibus subcarnosis glabris caulinis subulatis amplexicaulibus,
caule paucifloro (3-6-floro) ramis subunifloris viscido-pubescentibus, involucri hemis-
phserici foliolis subaequalibus acutis. Nees, Ast. p. 157.—Aster pauciflorus. Nutt. Gen. Am.
v. 2.p. 154.
H ab. Marshes of the Saskatcbawan. Drummond.
2. T. angustum (Lindl.); foliis linearibus serrulato-scabris glabris, caule angusto strictissi-
mo, ramis rectis racemosis, involucri hemisphserici imbricati foliolis linearibus acutis, radio
inconspicuo.—«. ramis oligocephalis.—13. ramis polycephalis.—Lindl. MSS.
H ab. et. Banks of the Saskatchawan. Drummond.—fi. Slave Lake. Dr. Richardson.—“ This species
differs essentially from T. subulatum, Nees (Aster subulalus, Mich.) in its stem not being flexuose, in its
serrulated leaves, in the form of the leaflets of the involucre, and in the flowers being twice as large.”
Lindl.
57. GALATELLA. Cass.
Radiusfcemineus sterilis. Involucri angusti foliola imbricata angusta, nervo herbaceo sub
apice non expanso. Achenia conoidea, dense hirsuta vel sericea. Pappus rigidulus, densus,
scaber. Receptaculum lacero-alveolatum.—Folia conformia angusta; radicalia minora, sessilia,
subverticalia, nervosa vel enervia solaque costa media, venis autem nullis divisa, rigidvla scabra
plerisque punctata, punctis in superficie superiori proesertim obviis insculptis glandu-
laque granuliformi nitidula viridi fundo foveolce immersa prceditis, qua glandules, in aliis
magis in aliis minus conspicuce, nonnullis omnino deesse videntur, caulis in f erne simplex,
apice distincte corymbosus, ramis dichotomis, rarius subtrichotomis. Radii ligulce distantes,
neutree. Nees.
1. G. nemoralis; foliis lanceolato-linearibus integerrimis enervibus impunctatis scabris,
caule apice corymboso, radio elongato. Nees, Ast. p. 173.—Aster nemoralis. Ait. Hort.
Kew. ed. 1. v. 3. p. 198.—A. ledifolius. Pursh, Fl. Am. v. 2. p. 544.—/3. uniflorus.—Aster
uniflorus. Mich. Am.v. 2. p. 110.
Hab. Canada. Pursh. Newfoundland. Mr. Cormack. Dr. Morrison.
2. G. graminifolia ; foliis angusto-linearibus subtrinervibus margine costaque pilosiusculis
impunctatis, ramis terminalibus gracilibus subaphyllis unifloris, involucri foliolis laxis discum